Improvement in lamps



A. BLISS.

La mp Chimney Holder.

Patented Jan. 14. 1862;

WZZzwa 5 as N4 PETERS, Pmwtnno n har, wuhingmn, D. C.

UNITED STATES PATENT OFFICE.

ALFRED BLISS, OF NEW' YORK, N. Y.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 34,125, dated January14, 1862.

- same, taken in the line at 00, Fig. 1; Fig. 8, a

vertical section of the same, taken in the line y y, Fig. 2; Fig. 4, adetached edge view of the rim pertaining to the same.

Similar letters of reference indicate corresponding parts in the severalfigures.

The object of this invention is to obtain a means whereby glass chimneysmay be attached to lamp tops in a secure manner and without danger ofthe same being broken while in the act of securing the chimney to thelamp-top nor by the expansion of the chimney by heat.

The invention consists in the employment or use of an annular metalclamp provided with a hinge or joint and inclined projections inconnection with loops orlips attached to the lamp-top, the clamp beingfitted on a flange at the lower end of the chimney, and the clampsecured to the lamp-top by means of its inclined projections fittingunder the loops or lips on the lamp-top, as hereinafter fully shown anddescribed.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents a lamp-top, which is provided with a removable cone ordeflector B, such as are now most generally used, and O is a glasschimney, which may be of the usual form and provided at its lower endwitha flange a, which projects from it all around nearly at rightangles, as shown clearly in Figs. 1 and 3.

D is an annular metal clamp, which is formed of two semicircular parts b1), connected at one end by a hinge or joint 0. The opposite ends of theparts I) b are provided each with a plate d, which project at rightangles from the parts I) b, and which, when said parts are closed ortheir disengaged ends in contact, lap over each other, as shown in at.The clamp D is of such dimensions that when closed it will encircle, butnot tightly, the lower part of the chimney just above the flange a, andalso fit in the upper part of the lamp-top A on the base of the cone ordeflector B.

Each part b of the clamp is provided with a projection 6. Theseprojections extend a trifle upward above the surface of clamp, and theirupper surfaces are inclined planes, as shown clearly in Fig. 4. Theprojections e e are at opposite points on the clamp, one being near thehinge or joint 0 and the other near the disengaged end of its part b, asshown in Fig. 2.

On the upperpart of the lamp-top A there are secured two loops or lipsff, which proj ect upward at such a height that the inclined projectionse e of the clamp may pass underneath them. The loops or lips ff are alsoslightly inclined at their under surfaces, corresponding to theinclination of the projections e e of the clamp, and are secured to thelamp-top at the ends of openings g g, which are made in its rim h toadmit of the plates d d and hinge or joint 0 of the clamp turning arequisite distance to enable the projections e being passed underneaththe loops or lips ff of the lamp-top.

From the above description it will be seen that in order to secure thechimney O to the lamp-top the clamp D is fitted to the lower part of thechimney O, and the clamp is then placed in the upper part of thelamp-top A and turned so that its inclined projections e 6 will passunderneath the loops or lips f f of the lamp-top. Bythis means the clampD will be pressed down on the flange a of the chimney and the latterfirmly secured to the lamptop. In consequence of having the clamppressed down on the flange Ct of the chimney, the latter will be securedto the lamp-top without the liability of being broken by expansion, asthe clamp does not pass laterally against the chimney, and the lattermay be removed from the lamp-top, even when hot, by grasping the platescl, which serve as a handle for that purpose, as well as for turning theclamp, in order to attach the chimney to the lamp-top. In order todetach the b I), connected together at one end by ahinge chimney fromthe lamp-top, the clamp D is or joint 0, in combination with the loopsor turned until its projections e e are out from lips ff 0n the lamp-topA, substantially as underneath the loops or lips f f. and for thepurpose herein set forth.

Having thus described my invention, what ALFRED BLISS.

I claim as new, and desire to secure by Let- Witnesses:

ters Patent, is JAMES LAIRD,

The annular clamp D, formed of two parts RICHARDSON GAWLEY.

